188 BRITISH LEPIDOPTEHA. 



colour. In the fir^t part of the mine, the excrement runs through as 

 a very fine continuous liua, hardly pale margined at the sides. In the 

 next portion, the excremental line is broader, and often interrupted, 

 but still always forms a dense mass, and on each side a faint narrow 

 light space is perceptible ; in the last portion, the mine expands, and 

 the excrement is thinner, more scattered, but still only occupies the 

 centre of the mine, leaving a considerable space on each side. Frey 

 describes the mine as " Massig geschliingelt, ziemlich unregelmassig 

 gestaltet, liegt bald am Bande, bald in der Mitte des Blattes. Sie beginnt 

 sehr fein mit einigen starken Windungen und wird dann nach unten 

 bis li'" breit. Der Koth liegt in zusammenhiingender Reihe als 

 braunschwarzer Streifen. Unterw-arts bleiben die Seitentheile des 

 Ganges leer, welche an der frischen Mine weissgriin, spater gelblich 

 braun erscheinen " (Die Tineen, etc., p. 371). 



LARVA. Length 2 lines ; rich yellow in colour, shining, dorsal 

 vessel reddish ; the head and the two posterior lobes, which show 

 through the upper surface of the second segment, pale reddish-brown 

 (Stainton). It is this larva that is referred to by Stainton (ZooL, 

 1853, p. 3959) as the " dark-coloured larva of the oak." 



COCOON. The cocoon is rather flattened, oblong-oval, and dull 

 reddish-orange in colour. One end is rather broader than the other, 

 and from this the pupa protrudes its anterior segments before the 

 emergence of the imago (Stainton). Frey writes : " Der Cocou ist 

 ein unregelmiissiges Oval von einer ziemlichen Abflachung und hoch 

 rothbraun, vielleicht etwas weniger dunkel als derjenige der vorhergc- 

 henden Art (atricapitella)." 



FOOD-PLAXTS. Quercus robur and Q. pediinculatu. (J. Niili-r 

 (Milliere). 



TIME OF APPEARANCE. The species is double- (or partially double-) 

 brooded, the imagines appearing in May, and again in August, the 

 former brood being by far the more abundant. The larvte of these 

 broods may be found in October-November, and July respectively. 

 Frey gives it as distinctly double-brooded in Switzerland. Renter 

 captured it on May 13th, 1886, on the I. of Aland. Stainton's 

 specimens were bred as follows : February 27th, 1852 ; April 1st, 18th, 

 27th (from dark larva), May 1st (from pale larva), July 28th (from 

 large larva), August llth, 16th, 1853; March 29th, April 21st, 1854; 

 May 2nd, 8th, 1855 ; April 4th, 1859, all from lieckenham and 

 Lewisham ; imagines captured May 16th, 1852, at Lewisham, and 

 May 17tb-20th, 1851, and June 2nd, 1852, at Beckenham. Atmore 

 notes the species, May 15th, 1898, at King's Lynn. 



LOCALITIES. BERKS : Heading (Hanim). CAMBRIDGE : Cambridge (Warren). 

 CHESHIRE: Bowdon (Edleston), Bromborough to Eastham (Gregson). DERBY: 

 Burton (Sang). DORSET: Weymouth (Richardson), Bloxworth (Cambridge), Glan- 

 villes Wootton (Dale). DURHAM: Darlington (Stainton). GLOUCESTER: Bristol 

 (Stainton). HEREFORD: Tarrington (Wood). KENT: Lewisham and Beckenham 

 (Stainton), Eltham (Bower), West Wickham (Bankes), Chattenden (Tutt). LANCA- 

 SHIRE : Manchester (Stainton), Preston (Threlfall). LINCOLN : woods nr. Alford 

 (Fletcher). NORFOLK: Norwich (Barrett), King's Lynn,comrnon (Atrnore). NORTH- 

 UMBERLAND ; Newcastle (Stainton). SUFFOLK: Tuddenham (Warren). Sri:i;i.v : 

 Haslernere (Barrett). SUSSEX : Lewes (Stainton), Goring Woods, etc., nlmndantin 

 oak woods throughout Sussex (Fletcher), Guestling (Bloonifield). WESTMORLAND : 

 Windermcre (Hodgkinson). YORKSHIRE: Scarborough (Stainton), York (Hind), 

 llichmond (Sang) ; generally distributed and common (Porritt) ; generally dis- 

 tributed in Doncaster district, and common (Corbett) . 



